PM 2.5 LEVEL REACHES PURPLE ALERT, RESULTS IN ALLERGY INCREASE |細懸浮微粒刺激結膜 發炎患者劇增 ｜ 公視新聞網 PNN

Over the past few days, PM2.5 levels have reached purple alert in many areas across Taiwan, causing a 20 to 40 percent increase in allergic conjunctiv...